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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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test/jdk/java/lang/instrument/ParallelTransformerLoaderTest.java Normal file
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/*
* Copyright (c) 2008, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* Test Java Program
*
* @author Daryl Puryear
* @copyright 1999-2004 Wily Technology, Inc. All rights reserved.
*/
/**
* @test
* @summary
* @requires vm.continuations
* @library /test/lib
* @run build TestClass1 TestClass2 TestClass3
* @compile ParallelTransformerLoaderTest.java
* @run driver jdk.test.lib.util.JavaAgentBuilder ParallelTransformerLoaderAgent ParallelTransformerLoaderAgent.jar
* @run driver jdk.test.lib.helpers.ClassFileInstaller -jar Test.jar TestClass1 TestClass2 TestClass3
* @run clean ParallelTransformerLoaderAgent TestClass1 TestClass2 TestClass3
* @run main/othervm -javaagent:ParallelTransformerLoaderAgent.jar=Test.jar ParallelTransformerLoaderTest platform
* @run main/othervm -javaagent:ParallelTransformerLoaderAgent.jar=Test.jar ParallelTransformerLoaderTest virtual
*/
public class ParallelTransformerLoaderTest {
private static final int kNumIterations = 1000;
public static void main(String[] args) throws Exception {
System.out.println();
System.out.print("Starting test with " + kNumIterations + " iterations");
for (int i = 0; i < kNumIterations; i++) {
// load some classes from multiple threads (this thread and one other)
Thread thread = new TestThread(2, args[0].equals("virtual")).thread;
thread.start();
loadClasses(1);
// log that it completed and reset for the next iteration
thread.join();
System.out.print(".");
ParallelTransformerLoaderAgent.generateNewClassLoader();
}
System.out.println();
System.out.println("Test completed successfully");
}
private static class TestThread implements Runnable {
private final int fIndex;
final Thread thread;
public TestThread(int index, boolean isVirtual) {
var f = isVirtual ? Thread.ofVirtual().factory() : Thread.ofPlatform().factory();
thread = f.newThread(this);
thread.setName("TestThread");
fIndex = index;
}
public void run() {
loadClasses(fIndex);
}
}
public static void loadClasses(int index) {
ClassLoader loader = ParallelTransformerLoaderAgent.getClassLoader();
try {
Class.forName("TestClass" + index, true, loader);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}